<!doctype html>
<link rel="match" href="../expected/css-attr-typed-ref.html" />
<style>
    div {
        width: 100px;
        height: 20px;
        border: 1px solid black;
    }
    .string::before {
        content: attr(foo raw-string);
    }
    .px {
        width: attr(foo px);
    }
</style>
<div class="string" foo="WHF!"></div>
<div class="string" foo=""></div>
<div class="px" foo="200"></div>
